Band-cutting attachment for thrashers



2 Sheets-Sheet 1.

(No Model.)

s. HARROP. BAND CUTTING ATTAUHMENT. FOR THR ASHERS.

Patented Sept. 14, 1886-.

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I I g l 1 N, PEIERS, Photo-Ullmgmpher, Washingm: n. c,

(No Model.) Sheets-Sheet 2.

S. HARROP BAND GUTTINGATTAGHMENT FOR THRASHERS. No. 348,966. Patented Sept. 14, 1886.

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UNITED STATES PATENT OFFICE.

SETH HARROP, OF OABERY, ILLINOIS.

BAND-CUTTING ATTACHMENT FOR THRASHERS.

SPECIFICATION forming part of Letters Patent No. 348,966, dated September 14, 1886.

Application filed March 16, 1886. Serial No. [95,379. (No model.)

To aZZ whom it may concern.-

Be it known that I, SETH HARROP, a citizen of the United States of America, residing at Cabery, in the .county of Ford and State of Illinois, have invented certain new and useful Improvements in Band-Cutting Attachments for Thrashers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in band-cutting attachments for thrashing-machines, and is of the class wherein the machinery is operated by means of geared connections with the thrashing-machine, to cut the bands of bundles of grain and deliver them to the person feeding the thrashing-machine as they are pitched in the hopper of the band-cutter; and it consists in certain novel features of construction and combinations of parts hereinafter more fully described and then pointed out in the claims.

Reference is had to the accompanying drawings and theletters and figures thereon, which form a part of this specification. in which Figure 1 is a top plan view of the band-cutting attachment, showingitsecured at one side of the feed end of a thrasher and geared therewith. The front part of athrashing-machineis shown for that purpose. Fig. 2 is a detail view of the slotted shaft and knife of the band-cutting attachment. Fig. 3 is a rear side elevation of the band-cutting attachment, showing it connected and geared to a thrashing-machine, of which a cross-section of the upper part is shown, takenon line at of Fig. 1. Fig. 4 is a central cross-sectional view of the slotted shaft and knife of the bandcutting attachment. Fig. 5 is a detail view of a portion of the knife of the band-cutting attachment, showing its tang and its forked beard. Fig. 6 is a detail view showing a face plan of one of the stationary eccentric cams and a crosssection of the slotted shaft, and the tang of the knife of the band-cutting attachment. Fig. 7 is a View of one of the stationary eccentric cams of the band-cutting attachment, showing its face and integral shaft-box. Fig. 8 is a vertical central longitudinal sectional view of the band-cutting attachment and a cross-see tion of its slotted shaft and knife. Fig. 9 is a rear view of one of the stationary eccentric cams and shaft-box of the band-cutting attachment. Fig. 10 is a plan View of a shaft having secured thereon a worm-gear and a shaft coupling, and is for the purpose of driving the working parts of the band-cutting attachment when connected with the gearing of the thrashing-machine. Fig. 11 is a side View of a worm-gear having its threads arranged at a reverse angle from those of the gear shown in Fig. 10, to be used as a substitute therefor when the attachment is used on the opposite side of the machine; and Fig. 12 is a detail View showing a side plan of a portion of the slotted shaft and knife of the band-cutting attachment.

Referring to the drawings, T represents the front end of a thrashing-machine, and F the throat thereof, where the unthrashed grain is fed to the machine-cylinder.

y represents a shaft properly boxed across the front part of the thrashing-machine in some convenient and suitable position, and has holes through its ends for the reception of a coupling key or pin, so that extensionshafts may be coupled to it at either end.

G is a spur-gear secured on said shaft and so arranged as to mesh with gearing of the thrashing-machine, from which it receives its motion to drive said shaft and the band-eutting attachment when coupled therewith.

E represents the platform of the band-cutting attachment, and has secured to its ends the beams L L, which extend from the side of said platform and, together with a set of crossbeams, form the main frame of the said attachment. Upon the extending end of said side beams, L L, are securely bolted the stationary eccentric cams R R, having the integral boxes N N, into which the slotted shaft B is boxed, as shown in Figs. 1 and 2, the said cams being set eccentrieally with said shaft. Upon the extending end of said shaft is secured a pin-wheel, 1, and boxed to beam L by box b, and coupled to shaft 3/ by means of coupling 1), is a shaft, 1), having secured ICC throughout their length, between said end bearings, and in the slot thus formed in said shaft, is arranged the reciprocating knife J', as shown. in Figs. 1, 2, 4-, 6, $4, and 12. The cutting part or blade of said knife .l is doubleedged and bearded, and it has a tang extending in each direction in said slot. which tangs terminate in forked heads 71, said forks being arranged at one side from the center line of said knife as far as one-half the diameter of the cams 1t and arranged to fork over the pcripheral face of said cams and, when turned, to ride thereon and reciprocate said knife and move its cutting-edges laterally in and out from the slot of said shaft *1 caused by the opposite arrangement of the forked heads 72 and cams R l, and the eccentric position of said cams relative to shaft TB. (See Figs. 2, c, i), and 12.) l riction-rollers Z, as shown in Figs. 2, 5, and 12, may be arranged in the forks of heads h to engage the cams lt, to pre vent too great wear of the parts.

1) D 1) .l) are rotating arms arranged on shaft ll, a pair at each end of blade J, as shown in Figs. 1, 2, S, and The arms of each pair are set so as to be opposite each other on their shaft, and are nearly tan-shaped, as shown particularly in Fig. 8, and so the spaces between them may receive the bundle, as shown in said figure, and their peripheral surfaces hold and support the bundle next succeeding until their rotation permits it to drop between them in like manner as the preceding one, that they may not come in con tact with each other during the bandeutting process. The spaces between said arms are arranged in line with the cutting-edges of the blade of knife Jfso the bundle may drop down on the edge of the blade, as shown in Fig. 8.

Near each cam R It, and parallel with the sides of arms 1:),is arranged a dividing-board, ll, (see Figs. 1, 3, and 8,) which has openings, through which the shaft 13 passes, and secured in said openings are sleeves C G, which extend to the arms 1) l) to cover the shaft 13 each way from the knife, so straw will not wind on said shaft.

Arranged on suitable standards upon the extending end of beams L L is a cross-bar,0, having yicldingly secured thereto the curved guides a, which extend down and under the shaft B and carrying arms l), and which hook into the vertical slots [of a depending curved apron, A,which is secured to platform E, as shown in Figs. 1, .l, and 8, said slots permitting vertical movement of that end of said guides, and preventing their ends from being pressed down too far by a bundle.

Upon and across the dividing-boards II II and frame of the attachment is arranged a beam, 0, properly braced by means of the braces d 17, one at each end. (See Figs. 1,3, and 8.) Depending from said cross-beam c is a pair of bundleguardspn. in, as shown in Figs. 1 and S, the bottom parts of which are circular about on the arc of a circle eccentric to shaft B, to operate as an upper guide in conjunction with the lower guides,a, and also asa guard to prevent bundles of grain or portions of bundles, after their hands are cut, from be ing carried by arms D D over to the entrance or-hopper again. The guards m in. gradually force the cut bundles out from between the arms 1) I), and assist in delivering them to the platform E.

The band-cutter is attached to a thrashing, machine, as shownin Figs. 1 ant .l, by means of hooks a of the thrashirig-machine, inserted in eyes a of the attachment, (see Figs. 1, 3, and 8,2) and held up toils position by mcansof braces ill (see Fig. 3) and shaft n, coupled with shaft y, as before stated.

The operation of the band-cutting attachment is as follows: \Vhcn the thrashing-machine is in operatiommotion is im parted therefrom to the attachment, which will continuously rotate shaft 1; and arms D l.) in the direction indicated by arrows 2 and 4. in .iflgS. I} and 8. Bundles of bound grain are pitched in the hopper of the attachment, as indicated by arrows 1 and 3 of Figs. 3 and 8, formed be tween the guards in in and guides a, and will lie upon the solid peripheries of the arms 1) I) for an instant, until the space between the arms reaches them, when they will singly drop between said arms and be carried down on the guide a. and around to the platform Ill, each rotation taking two bundles, and as they thus pass to the platform E the knife-blade J is forced out into and rcciprocatcd across the band of the bundle and cuts it to open the bundle, as stated, and each pair of arms and each edge of the knife are alike, each edge of the knife cuts, and the bands of l we bundles are cut at each revolution of the shaft. The blade J is long enough to cover fully one half the length of a bundle of bound grain, so as to positively engage the band wherever it happens to be on the bundle. The guides a are made of spring metal, and are yieldingly arranged so as to properly hold a small bundle to the knife-blade, and in case a large bundle should be taken in said guides will spring back and down to permit it to pass.

Fig. 8 shows a bundle of grain in the grasp of the arms 1) I), and the knife J in the act of cutting its band, and as it is carried around it will be delivered on platform E, as indicated by arrow 5.

The platform E may be arranged to incline, if desired, as shown by dotted lines in Fig.

The knife'blade J is bearded similarly to the sections ofaharvestirig-machine sickle, so that it will not need guiding to keep in order, and as it is rotated by the shaft 13 it is caused to reciprocate so that each edge of the knifeblade will each time cut in the same direction and in an opposite direction from its opposite edge; consequently the beards of each edge of said bladcarc inclined in the direction in which it cuts. Vhen the blade J is in a horizontal position, it is slighly elevated, and when in a perpendicular position it is forced out and will extend from the slot of said shaft, and is then centrally arranged between earns R B.

The worm-gear P (shown in Fig. 11) is for the purpose of a substitute for gear P of Fig. 3, when the attachment is arranged on the opposite side of the thrashing-machine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1. In the band-cutting attachmenthereinbefore described, the combination,with the slotted shaft B, of the stationary oppositely-arranged cams R R and knife J, having the forked heads h, said cams being arranged eceentrically to said shaft to reciprocate and at the same time project and retract said knife, in the manner substantially as specified.

2 The combination of a revolving longitudinally-slotted shaft, a pair of oppositelyarranged stationary cams eccentric to said shaft, a doubleedged knife in said slot, having at each end a forked head engaging one of said cams, a pair of carrying-arms secured at each side on said slotted shaft to hold the bundles, a series of yielding bundle supports and guides, and a delivering-platform, substantially as described.

3. In the band-cutting attachment hereinbefore described, the combination, with the depending slotted apron A and cross-rod O, of the yielding guide a, arranged to. hold the bundles against the knife J, substantially as and for the purpose set forth.

4. In a band-cutting attachment for thrashing-machines, the combination, with the platform E, of the rotary slotted shaft B, the arms D D, secured tosaid shaft, cams B R, having the shaft-boxes N N, knife J, arranged in the slot of said shaft, and yielding guides a, constructed and arranged substantially as and for the purpose set forth.

'5. In the band-cutting attachment shown and described, the combination, with the stationary eccentric cams R R, of the revolving slotted shaft B and knife-blade J, arrangedin the slot of said shaft and terminating at each end in a forked head, h, forked over the peripheral face of said cams, and arranged to operate said knife in the manner substantially as specified.

6, The combination, with the platform E,

side beams, L L, cross-beam c, cross-rod O,

the combination,with the slotted shaft B, cams R R, reciprocating double-edged knife J, having the tangs terminating in the forked heads h h, and carrying-arms D D, of the sleeves c c on said shaft, substantially as and for the purpose set forth.

SETH HARROP.

\Vitnesses:

PETER WAGNER, BEN HARROP. 

